A power base device

Abstract

This invention provides a power supply base device, including a base and a piezoelectric power generation unit. The base has a windward surface, on which a honeycomb flow guiding unit is provided. The honeycomb flow guiding unit has a plurality of flow guiding holes arrayed on the windward surface for accelerating airflow. The piezoelectric power generation unit is built into the inside of the flow guiding holes and is used to generate piezoelectric power by vibrating under wind force. The power supply base device provided by this invention, by setting the honeycomb flow guiding unit on the windward surface of the base, guides the airflow and forms airflow acceleration in the flow guiding holes. Combined with the piezoelectric power generation unit in the flow guiding holes, it captures broadband vibration energy, thereby simplifying the structural volume while improving power generation efficiency.

Description

Technical Field

[0001] This invention relates to the field of new energy technology for ships, specifically to a power supply base device. Background Technology

[0002] As a key component for ship safety and functional integration, the base of cruise ship railings or windshields has undergone technological evolution focused on safety, energy efficiency, and environmental adaptability. Traditional cruise ship railing or windshield bases often utilize reinforced concrete or steel structures, resulting in high weight and a simple windward design, leading to high drag coefficients during navigation, impacting energy efficiency and stability. Furthermore, they only provide structural support and do not integrate renewable energy technologies. Existing cruise ship acoustic systems rely on diesel generators or batteries for power, causing noise pollution, high carbon emissions, and energy waste. Currently, there are also some devices used at sea that incorporate wind power generation capabilities.

[0003] For example, Chinese patent CN112727662A discloses a wind and water power generation device based on piezoelectric sheets. This method achieves piezoelectric power generation by driving an elastic metal sheet to bend and deform through a propeller. It has the advantages of flexible layout and low processing cost.

[0004] While the aforementioned existing technologies can generate electricity through wind power and piezoelectric structures, these devices rely on propeller mechanical transmission structures, which limit their windward surface and make them bulky, thus making them unsuitable for space-constrained environments such as cruise ships. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a power supply base device that solves the technical problems of limited windward surface and large volume in the prior art.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This invention provides a power supply base device, comprising: A base having a windward surface, on which a honeycomb airflow guiding unit is provided, the honeycomb airflow guiding unit having a plurality of airflow guiding holes arrayed on the windward surface for accelerating airflow; and The piezoelectric power generation unit is built into the inside of the guide hole and is used to generate piezoelectric power by vibration caused by wind.

[0007] In some embodiments, the front section of the windward surface is concave, the rear section of the windward surface is convex, and the concave and convex surfaces are connected by an arc transition to form a concave parabolic curved surface.

[0008] In some embodiments, the guide hole is hexagonal in shape.

[0009] In some embodiments, the plurality of guide holes are arranged in a honeycomb array on the windward side, and the aperture of the plurality of guide holes gradually decreases from the geometric center of the honeycomb array toward the outer periphery, and the length of the plurality of guide holes gradually increases from the geometric center of the honeycomb array toward the outer periphery.

[0010] In some embodiments, the diameter of the guide hole gradually decreases from the windward side to the leeward side.

[0011] In some embodiments, the guide hole is divided into multiple segments along the length of the hole, and the direction of each segment deflects alternately to form a spiral airflow path. The angle of the alternating deflection of each segment is 15°-20°.

[0012] In some embodiments, the guide holes are arranged along the normal direction of the windward side.

[0013] In some embodiments, the piezoelectric power generation unit includes multiple stacked piezoelectric films, and a plurality of the piezoelectric films are arranged in a ring or grid array within the flow guide hole.

[0014] In some embodiments, a capacitor is also included, wherein the base has a leeward side opposite to the windward side, and the capacitor is mounted on the leeward side of the base.

[0015] In some embodiments, the base has a vent extending to the leeward side on its windward side, and a ventilation cavity is formed on the leeward side. The capacitor is installed in the ventilation cavity, and the vent communicates with the ventilation cavity to guide heat dissipation from the capacitor.

[0016] Compared with the prior art, the power supply base device provided by the present invention, by setting a honeycomb flow guiding unit on the windward surface of the base, guides the airflow under the arrangement of the windward surface and the flow guiding holes, and forms airflow acceleration in the flow guiding holes. In conjunction with the piezoelectric power generation unit in the flow guiding holes, it captures broadband vibration energy, thereby simplifying the structural volume and improving the power generation efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the flow guide hole structure of the present invention; Figure 3 This is a schematic diagram of the distribution of the flow guide holes on the windward side of the present invention; Figure 4 This is a structural schematic diagram showing the diameter and depth of the flow guide hole in this invention; Figure 5 This is a schematic diagram of the circuit topology optimization of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Base; 101. Windward side; 102. Leeward side; 103. Ventilation opening; 2. Honeycomb airflow guiding unit; 201. Airflow guiding hole; Detailed Implementation To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0019] To address the technical challenges of limited windward surface area and large size, this invention provides a power supply base device that can guide airflow by setting honeycomb flow guiding units on the windward surface of the base. The arrangement of the windward surface and flow guiding holes creates airflow acceleration in the flow guiding holes. In conjunction with the piezoelectric power generation unit inside the flow guiding holes, it captures broadband vibration energy, thereby simplifying the structural volume while improving power generation efficiency.

[0020] It should be noted that the power supply base device described in this invention is used for, but is not limited to, energy recovery and sound system power supply for cruise ship decks, railings, or wind deflectors. For ease of explanation, this invention will only use the application of the power supply base device to energy recovery and sound system power supply for cruise ship decks, railings, or wind deflectors as an example. The principle of the power supply base device applied to other types of equipment is essentially the same as that applied to energy recovery and sound system power supply for cruise ship decks, railings, or wind deflectors, and will not be elaborated here.

[0021] Please see Figure 1 , Figure 1 This is a schematic diagram of a power supply base device according to an embodiment of the present invention. The power supply base device includes a base 1 and a piezoelectric power generation unit. The base 1 has a windward surface 101 and a leeward surface 102 opposite to the windward surface 101. The windward surface 101 and the leeward surface 102 form a streamlined curved surface at the top of the base 1, transitioning from the front side of the base 1 to the rear side of the base 1 via the streamlined curved surface. Both the left and right sides of the base 1 are planar, and its bottom is also planar. The width between its left and right sides can be adjusted according to actual space constraints. The windward surface 101 is provided with a honeycomb flow guiding unit 2, which has a plurality of flow guiding holes 201 arrayed on the windward surface 101 to accelerate the airflow. During driving, the generated airflow is accelerated and enters the channel under the guidance of the windward surface 101 and the flow guiding holes 201. The piezoelectric power generation unit is built inside the flow guiding hole 201 and is used to generate piezoelectric power by vibrating under the wind force. After the airflow is accelerated and enters the channel, it comes into contact with the piezoelectric power generation unit, forming vibration and triggering piezoelectric power generation.

[0022] In one embodiment, please refer to Figure 1The front section of the windward surface 101 is concave, and the rear section is convex, with a circular arc transition between the concave and convex surfaces, forming a concave parabolic curved surface. This creates an asymmetrical curvature on the windward surface of the base, with the windward surface being a high-pressure zone and the leeward surface a low-pressure zone, causing the airflow to accelerate from the high-pressure zone to the low-pressure zone. The concave front section of the windward surface has a negative curvature, which accelerates the airflow, while the convex rear section has a positive curvature, creating vortices and enhancing the pressure difference at the inlet of the guide hole. A continuously varying radius of curvature is set along the airflow direction, and the curvature distribution is optimized through CFD simulation to ensure that the airflow velocity reaches its peak at the honeycomb hole inlet. The main body of the base 1 is made of 316L stainless steel or fiberglass, resistant to salt spray corrosion.

[0023] Understandably, the main body of base 1 can also be made of zinc-aluminum-magnesium alloy, which has 5-10 times stronger corrosion resistance than ordinary hot-dip galvanizing. It can automatically form a protective film to prevent rust from spreading, making it suitable for areas with heavy salt spray and high humidity, and offering high cost performance. Alternatively, corrosion-resistant alloys, such as nickel-based or titanium alloys, can be used. Through a multi-layer composite filter structure, corrosion resistance is optimized, making it suitable for coastal scenarios with high salt spray, and significantly extending the equipment's lifespan.

[0024] It should be noted that CFD simulation optimization of curvature distribution is an engineering optimization method that uses computational fluid dynamics techniques to systematically adjust the curvature distribution of a geometric surface to achieve specific flow performance targets. Its core logic is to influence flow field characteristics, such as pressure gradient, separation point, and turbulent kinetic energy, by changing curvature, ultimately improving fluid efficiency or satisfying specific constraints; this is a current technology.

[0025] In one embodiment, please refer to Figure 1 and Figure 3 The guide hole 201 is hexagonal in shape, and its symmetry can evenly distribute airflow pressure and reduce local turbulence. The windward surface 101 of the base 1 adopts a concave parabolic structure to optimize the airflow path. The parabolic surface has a longer edge length and a shorter center length, which can evenly distribute wind speed and reduce energy loss, allowing sea breeze to enter the guide hole 201 more efficiently. The curvature of the parabolic surface gradually increases from the center to the edge, forming a radial velocity compensation effect. The airflow path is short and the flow velocity is high, utilizing high kinetic energy to quickly pass through the core area. The curved surface guides the airflow from the high-pressure, high-speed central region to the low-pressure, low-speed edge region, suppressing vortex separation and reducing energy dissipation. Furthermore, the windward surface 101 is a continuous smooth curved surface, avoiding sharp-angle turbulence and reducing kinetic energy dissipation caused by vortex shedding.

[0026] Understandably, the guide hole 201 can also adopt other symmetrical structural shapes to achieve the purpose of uniformly dispersing the airflow pressure.

[0027] In one embodiment, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 Multiple guide holes 201 are arranged in a honeycomb array on the windward side 101, with the diameter of each guide hole 201 gradually decreasing from the geometric center of the honeycomb array towards the outer periphery, and the length of each guide hole 201 gradually increasing from the geometric center of the honeycomb array towards the outer periphery. The guide holes in the honeycomb array are divided into a central region and an edge region. The central region uses a larger diameter and a shorter length, while the edge region uses a smaller diameter and a longer length. This gradual design balances the airflow distribution and avoids turbulence caused by excessively high wind speeds in the central region. Correspondingly, by setting appropriate hole diameters and hole depth-to-diameter ratios, wind resistance and the exposed area of ​​the piezoelectric power generation unit can be balanced.

[0028] Furthermore, the diameter of the guide hole 201 gradually decreases from the windward side 101 to the leeward side 102, and gradually shrinks inward to form a narrowing channel, which further accelerates the airflow.

[0029] In one embodiment, please refer to Figure 2 The guide holes are arranged in an alternating pattern to avoid direct airflow, extend the air duct path, and increase the contact time with the piezoelectric unit. Specifically, the guide holes 201 are divided into multiple segments along their length, with each segment's direction alternately deflecting to form a spiral airflow path. The angle of alternating deflection for each segment is 15°-20°, improving wind energy utilization.

[0030] Furthermore, the guide holes 201 are arranged along the normal direction of the windward surface 101, which is conducive to the vertical injection of airflow and reduces lateral turbulence; in addition, the piezoelectric power generation unit is positioned to face the airflow, maximizing the vibration amplitude; and the structure is symmetrical, which can have the structural effect of uniform stress distribution.

[0031] In one embodiment, the piezoelectric power generation unit comprises multiple stacked piezoelectric films, with multiple piezoelectric films arranged in a ring or grid array within the flow guide hole 201. A polyvinylidene fluoride (PVDF) piezoelectric film is bonded to the inner wall of the flow guide hole 201; its high flexibility and wide-band response characteristics are suitable for capturing low-frequency wind vibration energy. Multiple piezoelectric power generation units are arranged within each honeycomb hole, employing a multi-layer stacked structure, preferably 5-10 layers. Parallel connection increases the output voltage, and series connection increases the current, thereby improving the overall power generation efficiency.

[0032] In one embodiment, a capacitor is also included, mounted on the leeward side 102 of the base 1. The capacitor is a supercapacitor, specifically an activated carbon-based EDLC, suitable for high power density and fast charge / discharge scenarios, with a power density >10kW / kg. It supports a wide temperature range of -40℃ to 70℃, such as for instantaneous discharge in sound environments. The rated voltage of a single cell is selected as 4.0V (LIC) or 2.7V (EDLC), and the system voltage is boosted to 12V / 24V through series connection. A parallel-then-series structure is adopted, with four groups of parallel cells, each group consisting of 12 cells in series, forming a 48V system, balancing voltage consistency and increasing capacity.

[0033] Furthermore, Schottky diodes, such as the HSMS-286x series, are used to construct a full-bridge rectifier, converting the AC output from the piezoelectric generator into pulsating DC, with a rectification efficiency >95%. Inductor and capacitor combinations are configured to filter out high-frequency ripple. Through series and parallel combinations, such as a 4S×3P configuration, with a total voltage of 24V and a capacitance of 3000F, it supports 10-second instantaneous discharge and a power >10kW. Fast switching via MOSFETs with a delay <1ms prioritizes meeting the instantaneous high current requirements of the soundscape.

[0034] Furthermore, the initial charging current is set to 0.5 times the rated current of the supercapacitor to prevent overheating. Switching occurs when the voltage reaches 90% of the rated value, and a PID algorithm controls voltage fluctuations within ±0.1V. The charging current is dynamically adjusted based on the piezoelectric output power, ranging from 10mA to 5A, to avoid overloading the piezoelectric module.

[0035] Furthermore, along the airflow direction, a layered layout is adopted. The base is divided into a front layer, a middle layer, and a rear layer from front to back. The front layer consists of piezoelectric power generation units installed in the airflow guide holes of the cellular array; the middle layer contains the circuit control module, including MPPT and rectifier, embedded inside the base 1; and the rear layer is equipped with supercapacitor banks.

[0036] For details, please refer to Figure 5 When the piezoelectric element is subjected to force, it generates charge. This charge is received and processed by the SSHC control chip. After processing, the charge is transferred in an orderly manner through the charge transfer module to prepare for subsequent energy storage. The zero-crossing detection module monitors the signal to ensure that the external capacitor is controlled at the appropriate time, and the MOSFET is switched. After the MOSFET flips, the charge is transferred to the supercapacitor to realize the storage and accumulation of energy.

[0037] In one embodiment, to utilize sea breeze for heat dissipation, the windward side 101 of the base 1 is provided with a vent 103 extending to the leeward side 102. The leeward side 102 has a ventilation cavity, and the capacitor is installed in the ventilation cavity. The vent 103 communicates with the ventilation cavity to guide airflow for heat dissipation from the capacitor. The capacitor is equipped with heat sinks to direct sea breeze directly onto the capacitor's heat sinks. A fatty acid-based composite material with a melting point of 45-60℃ and a latent heat ≥180J / g can also be installed on the capacitor to absorb instantaneous high heat and delay temperature rise.

[0038] To better understand this invention, the following is combined with... Figures 1 to 5 The technical solution of this invention is described in detail as follows: The parabolic surface formed on the concave and convex surfaces of the windward surface 101 has an asymmetrical curvature, which accelerates the airflow from the windward surface 101 to the leeward surface 102 and enhances the pressure difference at the inlet of the guide hole 201. The guide hole 201 is a regular hexagon, and with the gradually changing channel layout of the guide hole, it evenly disperses the airflow pressure, reduces local turbulence, and, in conjunction with the parabolic surface, optimizes the airflow path. It also has the effect of evenly distributing wind speed and reducing energy loss, balancing the airflow distribution, and avoiding turbulence caused by excessively high wind speeds in the central area. Furthermore, the spiral airflow path of the guide hole 201 improves the wind energy utilization rate, and the piezoelectric power generation unit faces the airflow, which can maximize the vibration amplitude. This results in high wind energy harvesting efficiency in low wind speed environments, while reducing wind-induced noise to provide instantaneous high-power electricity for immersive light shows, holographic projections, and other cruise ship soundscapes.

[0039] The base 1, through the synergy of the biomimetic streamlined curved surface and the flow guide hole structure of the honeycomb array, can significantly improve the wind energy collection efficiency in low wind speed environments. The asymmetric curvature distribution of its windward surface 101 can accelerate the airflow and form a pressure gradient, thereby increasing the peak wind speed at the inlet of the flow guide hole of the honeycomb array.

[0040] The flow guide holes of the regular hexagonal honeycomb array, combined with the arrangement of gradually varying apertures, effectively disperse airflow pressure and reduce turbulence loss, thereby lowering the overall wind resistance. At the same time, the multi-layer stacking of PVDF piezoelectric films enables broadband vibration energy capture, resulting in a significant improvement in power generation efficiency compared to traditional single-layer structures.

[0041] The supercapacitor bank employs a parallel-then-series topology, significantly improving instantaneous discharge power. Combined with a Schottky diode rectifier circuit and a PID dynamic control algorithm, voltage fluctuations are reduced. The modular, layered layout, combined with a forced convection cooling scheme, ensures stable operation of the supercapacitors in environments ranging from -40℃ to 70℃, providing a reliable high-power instantaneous power supply solution for the cruise ship's audio-visual system.

[0042] Improve wind energy harvesting efficiency in low-wind-speed environments while reducing wind-induced noise; achieve efficient piezoelectric conversion of wind-induced vibrations; adapt energy storage modules to meet the instantaneous high-power demands of soundscape devices and optimize the coordinated control logic of power generation, energy storage, and noise reduction; and achieve both aesthetic appeal and multifunctional integration through biomimetic structural and material innovations.

[0043] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A power supply base device, characterized in that, include: A base having a windward surface, on which a honeycomb airflow guiding unit is provided, the honeycomb airflow guiding unit having a plurality of airflow guiding holes arrayed on the windward surface for accelerating airflow; and A piezoelectric power generation unit, which is built into the inside of the guide hole, is used to generate piezoelectric power by vibrating under wind force; The front section of the windward surface is concave, and the rear section of the windward surface is convex, with a circular arc transition between the concave and convex surfaces, forming an inwardly concave parabolic curved surface. The guide hole is hexagonal in shape; The plurality of flow guide holes are arranged in a honeycomb array on the windward side, and the diameter of the plurality of flow guide holes gradually decreases from the geometric center of the honeycomb array to the outer periphery, while the length of the plurality of flow guide holes gradually increases from the geometric center of the honeycomb array to the outer periphery. The diameter of the guide hole gradually decreases from the windward side to the leeward side; The guide hole is divided into multiple segments along the length of the hole, and the direction of each segment deflects alternately to form a spiral airflow path. The angle of the alternating deflection of each segment is 15°-20°.

2. The power supply base device according to claim 1, characterized in that, The guide holes are arranged along the normal direction of the windward side.

3. The power supply base device according to claim 1, characterized in that, The piezoelectric power generation unit includes multiple layers of stacked piezoelectric thin films, and multiple piezoelectric thin films are arranged in a ring or grid array within the flow guide hole.

4. The power supply base device according to claim 1, characterized in that, It also includes a capacitor, wherein the base has a leeward side opposite to the windward side, and the capacitor is mounted on the leeward side of the base.

5. The power supply base device according to claim 4, characterized in that, The base has a ventilation opening on its windward side that extends to the leeward side, and a ventilation cavity is formed on the leeward side. The capacitor is installed in the ventilation cavity, and the ventilation opening is connected to the ventilation cavity to guide heat dissipation from the capacitor.

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